1.May l speak to Mary This is ( ) speaking A.she's B,No one

1.May l speak to Mary This is ( ) speaking A.she's B,No one C,her D,hers
2,Do you want me to ask father( )
A.when he let us go B.when would he let us go C.when did he let us go D.when he would let us go
3,The children are to do their homework the moment they ( )back from school
A.have arrived B.will arrive C.had arrived D.would arrive
但是更重要的是理由!REASON~